Backflow prevention structure of telescopic device
By installing anti-backflow structures at both ends of the waterstop strip of the bridge expansion joint, the problem of water backflow inside the waterstop strip is solved, the anti-backflow effect of the waterstop strip is achieved, and the service life of the bridge is extended.
Patent Information
- Application Number
- CN202422317518.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Water accumulating inside the waterstop strip of a bridge expansion joint without a curved end structure flows back from both ends, causing water to drip or flow onto the beam ends or piers, affecting the bridge's lifespan.
Anti-backflow structures, such as anti-backflow grooves, anti-backflow bosses, or anti-backflow recesses, are installed at both ends of the waterstop strip to prevent water from flowing from the end of the waterstop strip to the bottom of the waterstop strip. Waterstop strips made of stainless steel, rubber, polytetrafluoroethylene, or polyurethane are used.
It effectively prevents water from flowing back into the waterstop strip, extends the life of the bridge, has a simple structure and is easy to process, and is suitable for various types of waterstop strips.
Smart Images
Figure CN223660635U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bridge expansion device technical field, especially relate to a prevent backflow structure of expansion device. BACKGROUND
[0002] Bridge expansion device is the important component in bridge superstructure, is arranged between beam and beam or beam and abutment, can satisfy the expansion caused by various deformation of bridge, simultaneously plays waterproof function. The traditional railway bridge expansion device prevents the water in the waterstop from flowing out from both ends of the waterstop to cause adverse effects on the environment under the bridge, and both ends of the waterstop are provided with a tilted head structure. However, considering that the ballastless track bridge deck is provided with a drainage system, and the expansion device is installed in the water retaining platform, if the environment under the bridge is not afraid of water, the original tilted head structure at both ends of the expansion device can be cancelled, and a straight drainage structure is used, so that the water in the waterstop is directly drained from both ends of the waterstop to the ground or other positions under the bridge. The existing expansion device without tilted head for ballastless track beam uses long-life material for the waterstop, so that the durability of the expansion device is outstanding. When the water accumulated in the waterstop without tilted head structure flows out from both ends, the water may flow back from the bottom of the waterstop, and the backflow water may erode the beam end or the pier after dropping or flowing from the bottom of the waterstop, thereby affecting the service life of the bridge. SUMMARY
[0003] Therefore, the utility model provides a prevent backflow structure of expansion device, which is used to solve the above problems.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A prevent backflow structure of expansion device, comprising: a waterstop, the waterstop is arranged in the expansion device, and both ends of the waterstop are provided with a prevent backflow structure.
[0006] Further, the prevent backflow structure is a prevent backflow groove.
[0007] Further, the prevent backflow structure is a prevent backflow boss or a prevent backflow groove.
[0008] Further, the prevent backflow boss or the prevent backflow groove is arranged in multiple at both ends of the waterstop.
[0009] Further, the cross-sectional shape of the prevent backflow boss or the prevent backflow groove is triangular, semicircular, U-shaped or semicircular wave-shaped.
[0010] Further, the shape of the waterstop is V-shaped, W-shaped or wave-shaped.
[0011] Further, the material of the waterstop is stainless steel, rubber, polytetrafluoroethylene or polyurethane.
[0012] The utility model discloses beneficial effect lies in:
[0013] The anti-backflow groove, the anti-backflow boss or the anti-backflow groove at the two ends of the water stop strip can effectively prevent the accumulated water in the water stop strip from flowing to the bottom of the water stop strip from the end part, and prevent the backflow phenomenon; the anti-backflow boss or the anti-backflow groove is provided with a plurality of at the two ends of the water stop strip, which can further prevent the accumulated water from flowing to the bottom end of the water stop strip; the anti-backflow groove, the anti-backflow boss or the anti-backflow groove can be provided at the two ends of the water stop strip in V type, W type or wave type, and the cross-sectional shape of the anti-backflow boss or the anti-backflow groove can be provided with triangle, U shape or semicircle wave shape, which enriches the style of the water stop strip, is simple in structure, easy to process and forms, and is suitable for various types of water stop strips, and has great market benefit. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.
[0015] Figure 1 It is the three-dimensional structure schematic diagram of V type water stop strip of anti-backflow structure for anti-backflow groove;
[0016] Figure 2 It is Figure 1 It is the partial enlarged view of A in Fig.
[0017] Figure 3 It is the three-dimensional structure schematic diagram of W type water stop strip of anti-backflow structure for anti-backflow boss;
[0018] Figure 4 It is Figure 3 It is the partial enlarged view of B in Fig.
[0019] In the drawing,
[0020] 1-water stop strip, 2-anti-backflow groove, 3-anti-backflow boss. DETAILED DESCRIPTION
[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0022] Referring to the drawings Figures 1-4As shown, the utility model provides a telescopic device's anti -backflow structure, include: water stop 1, water stop 1 is arranged in telescopic device, and the both ends of water stop 1 are provided with anti -backflow structure.
[0023] Preferably, the anti-backflow structure is an anti-backflow groove 2, as shown in Figure 2 As shown in the figure, the anti-backflow structure is an anti-backflow groove 2 at the end of the water stop 1.
[0024] Preferably, the anti-backflow structure is an anti-backflow groove 2, as shown in Figure 4 As shown in the figure, the anti-backflow structure is an anti-backflow groove 2 at the end of the water stop 1.
[0025] Preferably, the anti-backflow structure is an anti-backflow groove 2, as shown in
[0026] Preferably, the anti-backflow structure is an anti-backflow groove 2, as shown in Figure 4 As shown in the figure, the anti-backflow structure is an anti-backflow groove 2 at the end of the water stop 1.
[0027] Preferably, the anti-backflow structure is an anti-backflow groove 2, as shown in Figure 1 As shown in the figure, the anti-backflow structure is an anti-backflow groove 2 at the end of the water stop 1. Figure 3 As shown in the figure, the anti-backflow structure is an anti-backflow groove 2 at the end of the water stop 1.
[0028] Preferably, the anti-backflow structure is an anti-backflow groove 2, as shown in
[0029] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the related parts can be referred to the method part.
[0030] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A backflow preventing structure of a telescopic device, characterized by comprising: Comprise: A water stop (1) is arranged in a telescopic device, both ends of the water stop (1) are provided with an anti-backflow structure.
2. A backflow prevention structure for a telescopic device according to claim 1, characterized in that The anti-backflow structure is an anti-backflow groove (2).
3. A backflow prevention structure for a telescopic device according to claim 1, wherein The anti-backflow structure is an anti-backflow boss (3) or an anti-backflow groove.
4. A backflow prevention structure for a telescopic device according to claim 3, wherein The anti-backflow boss (3) or the anti-backflow groove is arranged in multiple at both ends of the water stop (1).
5. A backflow prevention structure for a telescopic device according to claim 3, wherein The cross-sectional shape of the anti-backflow boss (3) or the anti-backflow groove is triangular, semicircular, U-shaped or semicircular wavy.
6. The anti-backflow structure of a telescopic device according to claim 1, wherein, The shape of the water stop (1) is V-shaped, W-shaped or wavy.
7. A backflow prevention structure for a telescoping device according to claim 1, wherein The material of the water stop (1) is stainless steel, rubber, polytetrafluoroethylene or polyurethane.